_, err := w.CreateHeader(h)
		if err != test.wanterr {
			t.Errorf("error=%v, want %v", err, test.wanterr)
		}
	}

	if err := w.Close(); err != nil {
		t.Fatal(err)
	}
}

func TestHeaderIgnoredSize(t *testing.T) {
	h := FileHeader{
		Name:   "foo.txt",
		Method: Deflate,